Image courtesy of the slide collection of Jack Harper.
Image courtesy of Larry Kuhns.
Ragweed flowers. Image courtesy of Larry Kuhns.
Giant ragweed with common ragweed growing beneath. Image courtesy of Larry Kuhns.
Leaves of giant ragweed. Image courtesy of Larry Kuhns.
Common ragweed growing with healall. Image courtesy of Larry Kuhns.
Leaves of common ragweed. Image courtesy of Larry Kuhns.
Plant Identification
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